The cams should match the crank pulley, and nothing else. ignore anything on the head/valve cover. TDC on the crank pulley needs to match TDC on the cams too. Then, you can adjust with the bolts to tune.

So to verify for my personal understanding since I need to go and finish the timing belt on my stock 90 SI the mark / line at the 7 o'clock position on the cam gear should be pointing to the "arrow" on the crank gear. Correct?

There are two different ways the cam gear timing is set in relation to the crank. The crank is always set to TDC, the lone white mark on the crank aligned with the "gun site" style pointers on the timing belt cover. If its an SI the cam gear has a mark @ about 7 o'clock and it lines up with a different pointer on the inside of the timing cover at approx 7 o'clock. If its not the SI, then the look for the two horizontal marks and make them level with the surface of the head. And no matter what, the text "UP" on the cam gears is on the up side. Hope this helps.